221002222210 has 128 divisors (see below), whose sum is σ = 525254160384. Its totient is φ = 64905096960.

The previous prime is 221002222169. The next prime is 221002222213. The reversal of 221002222210 is 12222200122.

It is not an unprimeable number, because it can be changed into a prime (221002222213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1093444 + ... + 1279696.

It is an arithmetic number, because the mean of its divisors is an integer number (4103548128).

Almost surely, 2^221002222210 is an apocalyptic number.

221002222210 is an abundant number, since it is smaller than the sum of its proper divisors (304251938174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221002222210 is a wasteful number, since it uses less digits than its factorization.

221002222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186368.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221002222210 its reverse (12222200122), we get a palindrome (233224422332).

The spelling of 221002222210 in words is "two hundred twenty-one billion, two million, two hundred twenty-two thousand, two hundred ten".